Jump Superstars

The following are Komas that can be unlocked from doing something
other than beating J-Adventure mode missions. The easiest way to get
the "Battle times" Komas is to repeatedly fail the "get hit
once and you lose" missions in J-Adventure mode.
and Chris Hardewig.
Goten Help Koma: Battle 200 times
Bobobo Battle Koma: Battle 350 times
Naruto Battle Koma: Battle 400 times
Don Pachi Battle Koma: Battle 450 times
Sasuke Battle Koma: Battle 500 times
Ichigo Help Koma: Get 450 Koma
Ichigo Battle Koma: Get 540 Koma
Vegito Battle Koma: Get all Koma

Press L or R during the introduction to change the color of the ink
you use to scribble on the bottom screen (with the Jump Pirate
face). The initial color is white, and the others are black, pink,
blue, cyan, green, yellow/orangish, red, and gray.

When you break open a crate, barrel, or any other object that makes
items pop up, immediately hold Guard. All harmful items, such as the
weight or poison, will land on you and disappear without any effect.
This also works on helpful items. It works on everything except for
bombs.